op chicago



July 17, 1928.

V. BENDIX BRAKE OPERATING MEANS Filed Jan. 8, 1927 INVENTOR VINg ENT BENmx "ts-8% ATTORNEY enemies July in 1928:

VINCENT BENDIX, OI CHIQAGO, IILIHOIS, ASSIGNOB Ti) BEHDE BRAKE CQMPANY, OF CHICAGO, ILLHEOIS, A, GQRORATION 9F ILLINGISK BBAKE-OPEEEA'EIIWG MEANS.

This invention relates to brakes, and E illustrated as embodied in novel operating mechanism for a front wheel memes brake. An object of the *ntion is to provide a. simplified. hrekooperating control for such a breln: prelersbly eirenged so that there is a brake-applying device which can shift to center itself but which is not shifted by the brake-applying force.

In one desirablearrangement, the broke applying device (shown as s can: and camshaft) is shiftelwle as described to permit the desired centering, while the operating means acts in a direction substantially perpendicnlar to the direction of shifting, so that it does not tend to shift the applying device.

When. used on a front or other swivelled wheel, I prefer to operate the applying do vice by a link or similar connection which is eirranged substantially perpendicular to the direction of shifting, and whichis operated by means connected thereto by e joint in or immediately adjacent the swivelling axis of the wheel, This is especially effeo tive when the applying device is arranged at one side of the brake for shifting move ment substantially paralleling the swivelling axis, and is operated by e l'iorizontol link extending therefrom to the joint at that axis.

Another feature of the invention relates to novel operating mechanism for a front brake including a brake-applying arm on the camshaft or its equivalent, and a gener-- ally-horizontal lever having its end in or immediately adjacent the swivellin axis of the Wheel, the two heing' connected y a link which is preferably substantially horizontal and perpendicular both to the arm and the lever.

The above and other objects and features of the invention, including variousgnovel combinations of parts and desirable details of construction, will be apparent from the following description of one illustrative embodiment shown in the accompanying drewing, in which:

Figure 1. is a vertical transverse section through the left front brake, looking toward the front of the car;

Figure 2 is a section on the line 2-2 of Figure 1, showing the brake-operating mechanism mostly in elevation; and

Figure 3 is a partial section on the line 3-3 of Figure 2, showing the brake-applying device and its support.

ings or slots The parts shown in Figure 1 include a inaliedrum re n with a wheel (not shown} on the spindle of e knuckle l4 svvivclled, hing pin is or the like, at one end of on an 18 supporting the usual chassis from. the open side of drum 1Q ihei-c is e stationery support, such as a backing plate 29, carrying the shoes or equivalent friction inc-ens, operated by a device shown as e douhleca'm which may he in tegral with a shaft spiined at its end to receive an operntingerm 28;

The brake proper may, if desired, be sub stnntielly as more fully described in Patent No. 1,567,716, granted Bendix Brake Com pany on December 29 i925, on application of A. Y. Dodge.

in order to permit earn 24 (or its equiva lent) to center or balance itself with respect to the friction means, when the brake is applied shaft is supported in a manner periniiting to shift bodily in a vertical direction,----i. e, in a direction generally paralieling the swivelling axis of the wheel.

The particular shaft siipport shown in eludes two plates or stampingsfii) and 32, formed with integral tubular bearings 34 for the shaft Plate 32 lies along the outside of the hacking plate 29, and serves to cover a relatively large opening 36 providing clearance about shaft 26 to permit the desired shifting.

Plates 3G and 32 are held spaced apart by posts or studs 38 40, post 38 being riveted over to form ahead 42 secnrin it permanently to plate 32, while 0st as a nut 44 threaded. on its reduce endto sccure it to plate 32. Plate 30 is secured on the posts by nuts 46, which clamp itrigidly ngainst shoulders on the posts.

In order to permit the desired shifting oi the support, as n. unit with shaft 26, posts 38 and 4.0 pass through relatively large openin the hacking plate 20, which openings etc in this particular arrangement concealed oy plate 32. The support is friciion'ally held in any position to which it may shift, by 'plite 32 and washers held againstthe inside of the backing plate 520 by springs 52 confined between the washers and plate 3-0.

It will he noted. that the brake-applying device is at the rear side of the brake, and that the shifting; is in a vertical direction, paralleling the swivelling axis ofthe wheel.

i he operating means includes a generally horizontal ierei' 5 fulcrum-ed on axle l8 me other p rt wli'cii docs not swivel h or about axis 1 V. paiwleling film swirelling axis of he and having its ends arranged he brake is applied) respectively adjsceni illfi frame and in or immediately adjacent swivelling axis, the outer end swing" in a horizontal arc subsianti in'toi'sei'rting the swivelling axis;

This lever 54- is connected to arm 28 by a; member such as a, link 58, havingiits front end turned vertically and projecting through an opening lli lllle outer end of lever 54 and held by 21 cot-cor pin or the like, and having its rear end turned horizonmll" and rojecing through in opening in the of arm 28 and held by means such as acotter pin 6Q.

It will be seen that arm 2-38 extends upwardly in a. direction parallel to the direction of shifting, and that member substantially horizontal, acting in a direction peipendicnlsir to the direction of shifting. The brake-applying forcetherefore i: no tendency to cause the brake-applying vioe to shift.

While one illustrative embodirne t been described in detail, it is riotin has inter? tion to limit the scope of the invention to rwise that particular embodiment, or o h.

i, claims,

than by the terms of ihe app. I claim: 1. Betarding mechanism for a. swivellod wheel comprising, in. combination, a brake swivelling with the wheel, on applying device for the brake, a support the applying device which is shift abl a direction paralleling the swivelling =1 of the wheel to permit the applying do a to center itself, and brake-operating IIE"-fil21l$ll1 inc1nd-. ing a joint substantially i :l swivelling axis when tho brake is oppi ll, to permit. swivelling of the wheel, and acting on the applying;- device snbsfisantielly at right angles to the cirection the support is shiftablo, so that the application of the brake does not tend to shift the support.

2. Retording mechanism for. a swivelled wheel comprising, in combinsiion, abrake swivelling Wibh the. Wheel, an applying device for the brake, a su port for the apply ing device which is shiitable in a direction to permitthe applying device to center itself, and. brake-operating mechanism including a joint substantially in said swivelling axis when the brake is applied, to permit swivelling of ihe wheel, and acting on ,iihs applying device in such a direction that the implication of me brake does not tend to saift the support,

3, Rei'ardiog mechanism a, swivellcd wheel comprisingin combination, s hr i s'wivsilisg with she wheel, on applying;

for

x lelin the j brake is applied, substantially at theswiveli ling axis, to permit: swivelling the Wheel in steering,

l, Retarding mechanism for a swi velled 1 wheel comprising, in combination, a brake swivelling with the Wheel, an applying device for the brake atone side of the broke, a support for the applying device which is shiftable in a direction parallelin the swivelling axis of the wheel to permit the cpplying device to center itself, and brakeoperating mechanism including a lever generally paralleling the axle and fulcrumed for movementobout an axis generally paralthe swivelling axis and a connecting inemlier extending from the swivelling axis to the applying device and movable lengthwise to act; on the applying device substantially at right angles to the direction the sup port shifts, together with a joint connecting said lever and said member and which is arranged, when the brake is applied, substantisily at 'tho swivelling axis, to permits'wivelling the Wheel in steering.

5. Retardingmechanism for a swivelled wheel comprising, in combination, a brake swivelling with the wheel, an applying device for the brake, a support for the applying devico which islshiftable to permit the applying; device to center itself, and brakeoperating mechanism arranged to act on tho applying device in a. manner which does not tend to shift the support and so constructed and arranged as to permit swivelling the wheel Without interference.

6. Retarding' mechanism comprising, in combination, a brake, an applyin device for the broke, a sup rt for the op ying device which is shiftalile to permit 51o applying device o'center itself, and brake-operating mechanism arranged to act on the apply ing device in a. incnner which does not tend to shift the support.

'2', Reterding mechanism comprising, in combination, a, brake, an applying device for the brake, & support for the applying device which is \sliiftahie to permit the applying d'ev' e lo come-r itself, and brake-operating mi lianism arranged to act ontlie applying devico substantially at right angles to the dir :iion the supportshifts.

9 Broke-operating mechanism compris ing, in combination, a brake-applying shaft, a support for the shaft permitting the shaft to shift when, the brake is applied, to center itself, and shaft-operating means so arranged as not to cause shifting'of the shaft.

9. Bral e 0perating mechanism comprising, in combination, a brake-applying shaft, 0. support for the shaft permitting the shaft to shift when the brakeis applied, to center itself, and shaft-operating means acting substantially at right angles to the direction of shifting.

l0. Brake-operating mechanism comprising, in com'bination,a brake-applying shaft,

a support for theshaft permitting the shaft to shift when the brake is applied, to center itself, an'operatin-g lever on the shaft extending generally in the direction of shifting' of the support, and a connection for operating the lever which extends from the lever in a direction substantially perpendicular to the direction of shifting.

11. Operating mechanism for a brake on a swivelled wheel supporting a chassis frame and comprising, in combination therewith, a brake-applying shaft at one side of the brake, an operating arm on-said shaft, an operating lever fulcrumed independently of the swiveliing parts and having its ends arranged, when the brake is applied, respectively adjacent said frame and substantially at the swivelling axis, and a connecting member having one end turned vertically and projecting through an opening in the end of said lever which is adjacent the brake, and having the other end turned horizontally and projecting through an opening in the end of said arm,

12. Operating mechanism for a brakeon a wheel swivelled at the end of an axle comprising, in combination, a brake-applying,

device at the rear side of the brake including an upwardly-extending hrake-applyin arm, an operating lever fulerumed indepeneently of the Swiveiling parts and lying along said axle and having its end swinging toward the front of the brake in its brake-applying movement and arranged, when the brake is applied, substantially at theaswivclling axis.

of the fsheel, and a tension connection be tween and end of the lever and the end of said arm.

in testimony whereof, I have hereunto signed my name.

VINCENT .BENDIX. 

